CharlesBennett believes that, in principle at least, it is perfectly feasible to teleport humans without violating any of the fundamental laws of physics.
Hitchcock and his scenarists (Charles Bennett, Alma Reville, Ian Hay, and Jesse Lasky, Jr.) scatter clues like gum wrappers as Ashenden and the General visit Switzerland to find an enemy agent whose skulduggery affects negotiations under way in Palestine.